Recent Topics
New PP 5W30 DEXOS 1 Gen 2
by ChrisD46
11/23/17 10:48 AM
Goodyear Assurance Comfortred Touring
by reemoe2
11/23/17 10:35 AM
Detailed the XJ
by HoosierJeeper
11/23/17 10:35 AM
Walmart also has some stuff you Castrol users
by JohnnyJohnson
11/23/17 09:55 AM
So I rented a 2017 Charger R/T- my review
by MCompact
11/23/17 09:49 AM
PUP Ultra $19.98 Walmart
by knnaz392
11/23/17 09:47 AM
F250 Deceleration Stall
by dkryan
11/23/17 09:19 AM
Warming up to Pennzoil Ultra at Walmart
by JohnnyJohnson
11/23/17 09:13 AM
Failing Thermostat?
by Delta
11/23/17 09:08 AM
Hitch ball slides in and out.
by motor_oil_madman
11/23/17 08:55 AM
Castrol Edge 0W40 on sale at CTC this weekend.
by mightymousetech
11/23/17 08:41 AM
No Fumoto Oil Change - Never Again!
by gathermewool
11/23/17 08:19 AM
F1 - 2017 Abu Dhabi Grand Prix
by gofast182
11/23/17 07:20 AM
Best Color Temp for Eye to See the Road?
by LoneRanger
11/23/17 07:05 AM
Bosch Creates iDisc Brake Rotors to reduce dust???
by Artem
11/23/17 06:53 AM
Not cleaning rimfires ?
by Shannow
11/23/17 03:33 AM
Autozone
by Dallas69
11/22/17 11:36 PM
To all you PEA fuel additive lovers...don't wait!!
by SubieRubyRoo
11/22/17 11:15 PM
Holographic sight
by spasm3
11/22/17 10:18 PM
Bad fuel filter
by Eric Smith
11/22/17 10:07 PM
Newest Members
deckm00, Cblove91, CarGuy99, bobcat, Skier
63481 Registered Users
Who's Online
90 registered (4WD, 2015_PSD, AandPDan, ag_ghost, 87sammy, 5 invisible), 1441 Guests and 14 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
63481 Members
66 Forums
274211 Topics
4557920 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#2432624 - 11/12/11 11:45 AM Mixing synthetic and conventional?
zerosoma Offline


Registered: 08/12/11
Posts: 2307
Loc: Omaha, NE
Thinking since I have a stash of both Quaker State Green Bottle and Quaker State UD that I could make it last a little longer by adding half dino and half synthetic. They are both 5W-30. Would this be okay or am I asking for trouble?

Also, to make things cheaper, since I live in South Dakota with cold winters, I was thinking of running conventional in the summer and synthetic (for its flow properties) in the winter on both our vehicles.

Is this change from dino to synthetic every year bad? I would probably put dino in around april or may and change it to synthetic around october/november.

Just looking for some input. thanks!
_________________________
2004 Hyundai Santa Fe LX 3.5L V6 (138k) [QSGB 10w40]
1995 Honda Accord LX (238k) - the pizza car [Havoline DS 10w40]
2002 Toyota Solara 3.0L V6 (203k)

Top
#2432631 - 11/12/11 11:52 AM Re: Mixing synthetic and conventional? [Re: zerosoma]
Loobed Offline


Registered: 07/20/07
Posts: 3742
Loc: Northern California, USA
Yes it is OK. I have been doing that to get rid of some 15w-40 oil I got for 25 cents a quart and some 5w-20 QSUD I got for $1 a quart. I mix it 50/50 and get something like 10w-30.
_________________________
Engine: 2001 GM 5.3L LM7
Current Fill: Valvoline Synpower 5w-30 w/Pure-One PL25288 filter

I.M.N Oil Enthusiast

Top
#2432634 - 11/12/11 11:59 AM Re: Mixing synthetic and conventional? [Re: zerosoma]
hate2work Offline


Registered: 09/04/08
Posts: 4617
Loc: Western Washington

Don't do it, it will ruin your engine, especially in South Dakota!!!

Just kidding smile

Google is your friend...

https://www.google.com/search?q=mixing+s...amp;safe=images
_________________________

Top
#2432637 - 11/12/11 12:04 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
oily boyd Offline


Registered: 05/23/05
Posts: 535
Loc: WI
I do it all the time.

I fill my 09 camry with 4.5 qts of PU, PP or M1 for an interval of 7.5K miles.

I then top up with PYB or Super 5000 - half a quart every 2k miles. Car has 160k on it.
_________________________
Kind Regards,

Boyd

Top
#2432646 - 11/12/11 12:16 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
daves87rs Offline


Registered: 02/23/09
Posts: 16590
Loc: Michigan
Not going to hurt..and it may even help.

That's the treatment my Cav gets now Convent-summer/syn-winter...no issues at all.
_________________________
Whatever you are, be a good one.

Top
#2432654 - 11/12/11 12:24 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
kozanoglu Offline


Registered: 09/10/11
Posts: 711
Loc: MKE
What comes out of the mix of 0W50 and 0W-20?
I have some Eneos Sustina 0W50 which is not good for any of my cars on its own and Toyota 0W20.

Top
#2432760 - 11/12/11 03:11 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
fdcg27 Offline


Registered: 09/25/09
Posts: 14699
Loc: OH
This won't cause any problems.
It's all oil, and the syn you're using is a highly refined mineral oil anyway.
I'd go with your plan and use the QSUD during the winter and the QSGB during the summer.
Don't mix the two, use them where they will perform best.
The QSUD would be a good winter oil, or a summer one, for that matter, while the QSGB will be fine for warmer weather.
_________________________
17 Forester 6K M1 AFE 0W20
12 Accord LX 78K M1 AFE 0W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

Top
#2432801 - 11/12/11 04:23 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
Papa Bear Online   content


Registered: 08/11/05
Posts: 6776
Loc: Leamington, ON, Canada ..... r...
Originally Posted By: zerosoma
Thinking since I have a stash of both Quaker State Green Bottle and Quaker State UD that I could make it last a little longer by adding half dino and half synthetic. They are both 5W-30. Would this be okay or am I asking for trouble?




Per Valvoline.com's webpage:


Can you mix different types of motor oil? For example, synthetic and synthetic blend or regular and synthetic? Is this going to cause problems?

Mixing synthetic and conventional oils will not cause any problems. The oils are compatible with each other.
_________________________

2016 Dodge GC Deep Cherry
2013 SYM Wolf Classic 150 (single cyl)
2011 Suzuki S40 (single cyl .. but it's a BIG ONE thumbsup)

Friend of Bill W


Top
#2433630 - 11/13/11 06:04 PM Re: Mixing synthetic and conventional? [Re: Papa Bear]
fdcg27 Offline


Registered: 09/25/09
Posts: 14699
Loc: OH
That's nice, but last that I looked, neither QSUD nor QSGB were Valvoline products.
_________________________
17 Forester 6K M1 AFE 0W20
12 Accord LX 78K M1 AFE 0W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

Top
#2434175 - 11/14/11 12:54 PM Re: Mixing synthetic and conventional? [Re: kozanoglu]
Loobed Offline


Registered: 07/20/07
Posts: 3742
Loc: Northern California, USA
Originally Posted By: kozanoglu
What comes out of the mix of 0W50 and 0W-20?
I have some Eneos Sustina 0W50 which is not good for any of my cars on its own and Toyota 0W20.


Mix 2 quarts of 0w-50 with 4 quarts of 0w-20 to get something close to 0w-30. There are other factors, but it will be close to a 30 weight.

(50x2)+(20x4)=180 ===> 180/6=30
_________________________
Engine: 2001 GM 5.3L LM7
Current Fill: Valvoline Synpower 5w-30 w/Pure-One PL25288 filter

I.M.N Oil Enthusiast

Top
#2434183 - 11/14/11 01:14 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
teddyboy Offline


Registered: 01/18/10
Posts: 964
Loc: NC, United States
It's called semi-synthetic although your blend would probably be heavier on the synthetic side which should be a good thing. Hence it would probably be a better blend of syn and dino for the same or less money.
_________________________
97 Camry M1 5W30 HM & OEM Filter
14 Camry TGMO 0W20 & OEM Filter
08 Volvo S60 M1 0w40 OEM Filter

Top
#2434184 - 11/14/11 01:16 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
lexus114 Offline


Registered: 05/12/08
Posts: 6252
Loc: Easton, PA
its okay and all to do so, I just dont know why you want to bother. IMO just do one or the other.
_________________________
2017 Mercedes-Benz C300 4matic coupe 2.0 turbo
2018 Lexus NX300 F-SPort 2.0 turbo AWD

Top
#2435287 - 11/15/11 02:15 PM Re: Mixing synthetic and conventional? [Re: lexus114]
zerosoma Offline


Registered: 08/12/11
Posts: 2307
Loc: Omaha, NE
Originally Posted By: lexus114
I just dont know why you want to bother.


Conventional is cheaper, I have a stock of synthetic and I'd like to make it last longer.


Edited by zerosoma (11/15/11 02:16 PM)
_________________________
2004 Hyundai Santa Fe LX 3.5L V6 (138k) [QSGB 10w40]
1995 Honda Accord LX (238k) - the pizza car [Havoline DS 10w40]
2002 Toyota Solara 3.0L V6 (203k)

Top
#2439290 - 11/19/11 05:35 PM Re: Mixing synthetic and conventional? [Re: zerosoma]
otis24 Offline


Registered: 10/30/05
Posts: 1580
Loc: South Dakota
I work at a Ford dealership. I can buy my oil at cost +10%. Needless to say, I can buy MC sytnthetic blend very cheaply and I can use the shop's lift, tools and dispose of my oil there. I run 3 qts MC syn blend and 2 qts MC full synthetic. If I did my math correctly, I'm getting a 64% synthetic.


Edited by otis24 (11/19/11 05:37 PM)
_________________________
1991 Chevrolet K1500 (4.3, 4x4, 86k miles)

2016 Dodge Grand Caravan
(3.6 V6) 46500 miles

Top